Is it a bird? Is it a plane? No, it's the world's largest hybrid aircraft

World Longest aircraft Airlander or HAV304 was unveiled at Cardington in Bedfordshire, Britain in the first week of March.

Note : 

Known as the HAV304, aircraft is being displayed at hanger in Bedfordshire
It is 300ft (91m) long making it 60ft (18m) longer than the biggest airliners
It can stay in air for 3 weeks and will be vital to delivering humanitarian aid
Its funders have included the Iron Maiden singer Bruce Dickinson
The aircraft, due to fly later this year, is 70 per cent more environmentally friendly than a cargo plane and doesn’t need a runway to take off

HAV304: THE TECHNICAL DATA

Volume: 1,340,000 ft³ (38,000 m³)

Length:  302 ft (92m)

Width:    143 ft (43.5m) 

Height:   85 ft (26m)

Endurance: 5 days manned Altitude: up to 20,000 ft (6,100 m)

Speed:  92 mph (148 km/hr)

Weight:  44,100 lbs (20,000 kg)

Payload capacity: 22,050 lbs (10,000 kg)